Shimano Ultegra BR-R8100 Brake Calliper The Shimano Ultegra BR-R8100 Brake Calliper is designed for cyclists who seek a balance of lightweight performance and stiffness. Ideal for both enthusiasts and competitive riders, this brake calliper ensures reliable stopping power. Key Features Dual-pivot calliper brake with super SLR-EV design for quick linear response and improved braking power Enhanced brake arch proportions for increased power and quicker response Low profile outer cable stop position for better cable routing and reduced friction Spring tension adjuster for precise set-up Adjustable toe-in on the brake shoes for easy installation Added clearance for compatibility with 28C tyre size For optimal performance, the Shimano Ultegra BR-R8100 Brake Calliper should be used with super SLR levers to ensure the correct leverage ratio. This ensures that every ride is smooth and controlled, no matter the conditions.